A leader with an adamant set of morals and values gives those who they lead assurance that the decisions they make will be desirable ones. Leaders without adamant morals and values are not leaders at all, but followers.
In academic writing, professors often expect you to use at least 3 or 4 sentences in a paragraph.
I think you would enjoy these two articles:
Daniel Goleman's "What makes a leader?"
&
Prentice's "Understanding leadership"
This essay is great. Excellent structure, grammar, and ideas...
:-)